David Lewis is widely regarded as the philosopher who introduced the concept of common knowledge. His account of common knowledge differs greatly from most later accounts in philosophy and economy, with the central notion of his theory being ‘having reason to believe’ rather than ‘knowledge’. Unfortunately, Lewis’s account is rather informal, and the argument has a few gaps. This paper assesses two major attempts to formalise Lewis’s account and argues that these formalisations are missing a crucial aspect of this account. (...) Therefore, a new reconstruction is proposed, which explicitly discusses ‘reasons’ and uses a logic inspired by justification logic. (shrink)

This paper analyzes the apraxia argument in Cicero’s Academica. It proposes that the argument assumes two modes: the evidential mode maintains that skepticism is false, while the pragmatic claims that it is disadvantageous. The paper then develops a tension between the two modes, and concludes by exploring some differences between ancient and contemporary skepticism.

Teaching a compulsory, large-scale Philosophy of Economics (PoE) course to economics students presents distinct challenges. Instructors face a heterogeneous student body with varying levels of interest in the topics, diverse occupational goals and a limited philosophical background. Unlike elective courses, for which students self-select based on interest, a compulsory course entails motivating disengaged students and managing their expectations. We put forward the case for a student-oriented approach to teaching PoE, emphasising four key strategies: recognising students’ limited philosophical knowledge, demonstrating the (...) relevance of PoE to their professional and personal lives, using real-world problems to engage them and avoiding the oversimplification of topics. We argue that PoE instruction should account for the distinct characteristics of economics students, moving beyond a supply-driven approach. Our suggestions aim to enhance student engagement and provide practical guidance for instructors navigating the challenges of teaching PoE at scale. (shrink)

I argue that in the Phaedo, Plato maintains that the soul is located in space and is capable of locomotion and of interacting with the body through contact. Numerous interpreters have dismissed these claims as merely metaphorical, since they assume that as an incorporeal substance, the soul cannot possess spatial attributes. But careful examination of how Plato conceives of the body throughout his corpus reveals that he does not distinguish it from the soul in terms of spatiality. Furthermore, assigning spatial (...) attributes to the soul plays an important role in Plato’s account of the relation of body and soul. (shrink)

While artificial intelligence (AI) is increasingly applied for decision-making processes, ethical decisions pose challenges for AI applications. Given that humans cannot always agree on the right thing to do, how would ethical decision-making by AI systems be perceived and how would responsibility be ascribed in human-AI collaboration? In this study, we investigate how the expert type (human vs. AI) and level of expert autonomy (adviser vs. decider) influence trust, perceived responsibility, and reliance. We find that participants consider humans to be (...) more morally trustworthy but less capable than their AI equivalent. This shows in participants’ reliance on AI: AI recommendations and decisions are accepted more often than the human expert’s. However, AI team experts are perceived to be less responsible than humans, while programmers and sellers of AI systems are deemed partially responsible instead. (shrink)

Increasingly complex and autonomous systems require machine ethics to maximize the benefits and minimize the risks to society arising from the new technology. It is challenging to decide which type of ethical theory to employ and how to implement it effectively. This survey provides a threefold contribution. First, it introduces a trimorphic taxonomy to analyze machine ethics implementations with respect to their object (ethical theories), as well as their nontechnical and technical aspects. Second, an exhaustive selection and description of relevant (...) works is presented. Third, applying the new taxonomy to the selected works, dominant research patterns, and lessons for the field are identified, and future directions for research are suggested. (shrink)

This paper defends an intellectualist interpretation of Diotima’s speech in Plato’s Symposium. I argue that Diotima’s purpose, in discussing the lower lovers, is to critique their erōs as aimed at a goal it can never secure, immortality, and as focused on an inferior object, themselves. By contrast, in loving the form of beauty, the philosopher gains a mortal sort of completion; in turning outside of himself, he also ceases to be preoccupied by his own incompleteness.

In this paper, I explore parallels between philosophical and tyrannical eros in Plato's Republic. I argue that in arguing that reason experiences eros for the forms, Plato introduces significant tensions into his moral psychology.

In this chapter, I offer an overview of current scholarly debates on Plato's Lysis. I also argue for my own interpretation of the dialogue. In the Lysis, Socrates argues that all love is motivated by the desire for one’s own good. This conclusion has struck many interpreters as unattractive, so much so that some attempt to reinterpret the dialogue, such that it either does not offer an account of interpersonal love, or that it offers an account on which love is, (...) in fact, an other-regarding state. Others, notably Vlastos, criticize Socrates’ theory as implausibly and repellently egoistic. I maintain, against the first group, that Socrates is indeed offering an egoistic theory of love. I argue, against the second, that, while Socrates’ theory may be repellent, it possesses considerable explanatory power and avoids certain weaknesses which infect contemporary approaches to love. (shrink)

In this paper, I offer a new interpretation of Aristophanes’ speech in Plato’s Symposium. Though Plato deliberately draws attention to the significance of Aristophanes’ speech in relation to Diotima’s (205d-206a, 211d), it has received relatively little philosophical attention. Critics who discuss it typically treat it as a comic fable, of little philosophical merit (e.g. Guthrie 1975, Rowe 1998), or uncover in it an appealing and even romantic treatment of love that emphasizes the significance of human individuals as love-objects to be (...) valued for their own sakes (e.g. Dover 1966, Nussbaum 1986). Against the first set of interpreters, I maintain that Aristophanes’ speech is of the utmost philosophical significance to the dialogue; in it, he sets forth a view of eros as a state of lack and a corresponding desire for completion, which is the starting-point for Diotima’s subsequent analysis. Against the second, I argue that Aristophanes’ speech contains a profoundly pessimistic account of eros. Far from being an appreciative response to the individuality of the beloved, eros, for Aristophanes, is an irrational urge, incapable of satisfaction. It is this irrationality that precludes Aristophanes’ lovers from achieving the partial satisfaction of erotic desire that is open to their Socratic counterparts through their relationship to the forms. (shrink)

In this chapter, I offer an overview of current scholarly debates on Plato's Lysis. I also argue for my own interpretation of the dialogue. In the Lysis, Socrates argues that all love is motivated by the desire for one’s own good. This conclusion has struck many interpreters as unattractive, so much so that some attempt to reinterpret the dialogue, such that it either does not offer an account of interpersonal love, or that it offers an account on which love is, (...) in fact, an other-regarding state. Others, notably Vlastos, criticize Socrates’ theory as implausibly and repellently egoistic. I maintain, against the first group, that Socrates is indeed offering an egoistic theory of love. I argue, against the second, that, while Socrates’ theory may be repellent, it possesses considerable explanatory power and avoids certain weaknesses which infect contemporary approaches to love. (shrink)

According to Plato's successors, assimilation to god (homoiosis theoi) was the end (telos) of the Platonic system. There is ample evidence to support this claim in dialogues ranging from the Symposium through the Timaeus. However, the Philebus poses a puzzle for this conception of the Platonic telos. On the one hand, Plato states that the gods are beings beyond pleasure while, on the other hand, he argues that the best human life necessarily involves pleasure. In this paper, I argue that (...) the solution to this puzzle lies in the fact that the processes by which we assimilate to god, learning and becoming virtuous, are restitutive and hence pleasant. Thus, the reason why the best human life necessarily involves pleasure is that we can never become fully divine and perfect, but must constantly strive to become like the divine, through pleasureful restitutive processes. In this paper, I also provide a close examination and taxonomy of the different models that Plato presents throughout his corpus of assimilation to god. -/- Note: "Fleeing the Divine" (Philebus: Selected Papers from the VIII Symposium Platonicum) is an earlier, shorter version of this paper. (shrink)

In dialogues ranging from the Symposium to the Timaeus, Plato appears to propose that the philosopher’s grasp of the forms may confer immortality upon him. Whatever can Plato mean in making such a claim? What does he take immortality to consist in, such that it could constitute a reward for philosophical enlightenment? And how is this proposal compatible with Plato’s insistence throughout his corpus that all soul, not just philosophical soul, is immortal? In this chapter, I pursue these questions by (...) applying the distinction between general and earned immortality to the Phaedo and the Symposium. I argue that, while Plato attributes general immortality to all soul in the Phaedo, in the Affinity Argument, he proposes that the philosopher’s soul can achieve earned immortality through contemplating forms. It is this form of immortality that Plato claims is unavailable to humankind in the flux passage of the Symposium. At the same time, in the ascent passage, he holds out the possibility – albeit with significant reservations – that the philosopher’s soul may transcend its humanity and achieve earned immortality through its communion with the form. (shrink)

Introduction to a volume on Hegel, asking why his thought continues to be relevant today.

In the Protagoras, Socrates argues that what appears to be akrasia is, in fact, the result of a hedonic illusion: proximate pleasures appear greater than distant ones. On the face of it, his account is puzzling: why should proximate pleasures appear greater than distant ones? Certain interpreters argue that Socrates must be assuming the existence of non-rational desires that cause proximate pleasures to appear inflated. In this paper, I argue that positing non-rational desires fails to explain the hedonic error. However, (...) careful consideration of Socrates’ treatment of appearances reveals that he is not without resources to explain the illusion. I argue that in the Protagoras, appearances are imagistic mental representations that appear true but tend to be false. I suggest that proximate pleasures produce inflated hedonic predictions because we represent them more vividly than distant ones, yielding greater anticipatory pleasure which causes us to overestimate their magnitude. (shrink)

This chapter examines Plato's moral psychology in the Phaedrus. It argues against interpreters such as Burnyeat and Nussbaum that Plato's treatment of the soul is increasingly pessimistic: reason's desire to contemplate is at odds with its obligation to rule the soul, and psychic harmony can only be secured by violently suppressing the lower parts of the soul.

One of the ways in which Plato has captured the popular imagination is with the claim that the philosopher can feel erôs, passionate love, for the objects of knowledge. Why should Plato make this claim? In this chapter, I explore Plato’s treatment of philosophical erôs along three dimensions. First, I consider the source of philosophical erôs. I argue that it is grounded in our mortality and imperfection, which give rise to a desire for immortality and the immortal. Second, I turn (...) to the object of philosophical erôs. I suggest that it is an arresting response to beauty, through which we come to value the ideal properties of the forms. Finally, I address the nature of erôs. I claim that it is a focusing desire, that overrides other concerns and causes us to overwhelmingly focus on its object. I conclude the chapter by considering the problem Vlastos famously raises for Plato’s account of erôs: can it do justice to disinterested, interpersonal love? In agreement with Vlastos, I claim that one who comes to grasp the forms will cease to feel interpersonal love; however, I also suggest that erôs can give rise to philia, beneficent concern with the wellbeing of others. (shrink)

Note: "Next to Godliness" (Apeiron) is an expanded version of this paper. -/- According to Plato's successors, assimilation to god (homoiosis theoi) was the end (telos) of the Platonic system. There is ample evidence to support this claim in dialogues ranging from the Symposium through the Timaeus. However, the Philebus poses a puzzle for this conception of the Platonic telos. On the one hand, Plato states that the gods are beings beyond pleasure while, on the other hand, he argues that (...) the best human life necessarily involves pleasure. In this paper, I argue that the solution to this puzzle lies in the fact that the processes by which we assimilate to god, learning and becoming virtuous, are restitutive and hence pleasant. Thus, the reason why the best human life necessarily involves pleasure is that we can never become fully divine and perfect, but must constantly strive to become like the divine, through pleasureful restitutive processes. In this paper, I also provide a close examination and taxonomy of the different models that Plato presents throughout his corpus of assimilation to god. (shrink)

Researchers in the health sciences regularly discover information of potential health importance unrelated to their object of study in the course of their research. However, there appears to be little guidance available on what researchers should do with this information, known in the scientific literature as incidental findings. The study described here was designed to determine the extent of guidance available to researchers from public sources. This empirical study was part of a larger two-year project funded by the National Human (...) Genome Research Institute to generate guidance on how incidental findings should be managed in human subjects research, especially genetics, genomics, and imaging research. We generated empirical analysis of publicly available guidance and consent forms to help guide a multidisciplinary Working Group of experts in their formulation of normative recommendations reported in this symposium. (shrink)

Wars and crises worldwide force millions of people to flee and seek refuge, often outside their countries of origin. What moral responsibilities do states have towards refugees? In this Ethical Annotation, Dr Jos Philips and his co-authors zoom in on the responsibilities of EU countries. They consider arguments in favour of and against admitting refugees and argue that EU countries must do at least at much as they can do at little cost, and perhaps even more.

Human relationships with cars are multifaceted and morally fraught. Cars serve multiple functions, and generate experiences characteristic of both fine art and everyday aesthetic experience – but they’re also the roots of dire eco-social ills. Recent theories tend to undermine the aesthetic aspects of human-automobile relationships in order to emphasize cars’ ethically problematic effects. But cars’ shameful consequences need not cancel out their beauty or their relevance to aesthetic theories. I suggest that David Hume’s aesthetic tenets demonstrate how and why (...) cars are beautiful, foregrounding considerations that automobile aesthetics can’t afford to ignore but that risk being obscured by cars’ positively and negatively charged status. For instance, Hume underscores rational choice as an element of aesthetic experience: we can choose how and when to experience cars’ beauty or ugliness. According to Hume, utility tends to inspire sentiments of beauty; and what is ethically good is most useful to humanity at large. But tension arises from this principle, as Hume finds that even socially harmful phenomena are yet aesthetically interesting. This provocative tension is at the heart of the aesthetic appreciation of cars, and is part of what makes such appreciation worthwhile. Hume paves the way to a realistic aesthetics of automobiles that can account for their problematic effects while refusing to downplay their aesthetic potential. This paper was presented at the 2011 Meeting of the American Society for Aesthetics in Tampa, Florida. (shrink)

In this paper, we report the results from an experimental reproductive ethics study exploring questions about reproduction and parenthood. The main finding in our study is that, while we may assume that everyone understands these concepts and their relationship in the same way, this assumption may be unwarranted. For example, we may assume that if ‘x is y’s father’, it follows that ‘y is x’s child’. However, the participants in our study did not necessarily agree that it does follow. This (...) means, at the very least, that we need to make sure all parties in a debate have the same relationships in mind when talking about reproduction and parenthood. Moreover, it gives us reason to explore more carefully the conditions which support or undermine the connections between these concepts. This cannot come from purely theoretical reasoning, nor from empirical research alone, but from the alliance between the two. (shrink)

Lisa Hill’s response to my critique of compulsory voting, like similar responses in print or in discussion, remind me how much a child of the ‘70s I am, and how far my beliefs and intuitions about politics have been shaped by the electoral conflicts, social movements and violence of that period. -/- But my perceptions of politics have also been profoundly shaped by my teachers, and fellow graduate students, at MIT. Theda Skocpol famously urged political scientists to ‘bring the state (...) back in’ to their analyses, and to recognise that political identities, interests and coalitions cannot be read off straightforwardly from people’s socio-economic position. In their different ways, this was the lesson that Suzanne Berger, Charles Sabel and Joshua Cohen tried to teach us, emphasising the ways that political participation and conflict, themselves, can change people’s identities, their sense of what it is desirable and possible, and their ability to recognise, or oppose, the freedom and equality of others. -/- I do not therefore take it as self-evident that the poor and seemingly powerless should be politically apathetic, unwilling to vote, or incapable of imagining a political solution to at least some of the problems confronting them. Nor do I suppose that non-voters are all-of-a-piece, and that their shared interests are, inevitably, more significant, morally or politically, than those which divide them. Such assumptions seem mistaken in the case of voters, and I see no reason why they should be true of non-voters. The people we find in these categories are not predestined to be in one rather than the other; they do not always stay where they start off; and at an individual level, the reasons why people fall into one group, rather than another, are likely to be complex and sometimes unpredictable. -/- Above all I see nothing in a commitment to democratic government, understood realistically or in more idealistic terms, that requires us to treat raising turnout at national elections (once every four years or so) as of such moral or political importance that we should make it legally mandatory. Realistically, it is an open question how far the ballot box is, for most people, the path to empowerment – important though it is that people should have an equal right to vote and to stand as candidates at national elections. On a more idealistic view of democratic politics it is hard to avoid the thought that the importance of national elections to self-government, posited by proponents of compulsory voting, reflects an alienated and alienating view of democracy, in which the choice of our leaders becomes more important than the development and exercise of our own capacities to lead; and in which our awe at the power our leaders might wield is matched only by our inability to imagine less intimidating, distant and centralised forms of politics. -/- But before saying a little more about these points, and their significance for compulsory voting, I would like to dispel some misunderstandings or misrepresentations of my views in Hill’s essay. I do not believe socio-economic disparities in turnout are not worrying for democratic politics, nor do I believe that abstention is generally synonymous with consent. I do not assume that people have a right not to vote, but try to explain why moral and legal rights to abstain are an important part of democratic politics, including electoral politics. (shrink)

In The World as Will and Representation (Vol. I, Book 3, § 52) by Arthur Schopenhauer we find the following, striking words: It is just this universality that belongs uniquely to music, together with the most precise distinctness, that gives it that high value as the panacea of all our sorrows. (p. 262) Accordingly, music ... is in the highest degree a universal language ... Yet its universality is by no means that empty universality of abstraction, but is of quite (...) a different kind; it is united with thorough and unmistakable distinctness. (p. 262) ... music expresses in an exceedingly universal language, in a material, that is, in mere tones, and with the greatest distinctness and truth, the inner being, the in-itself, of the world, which we think of under the concept of will (p. 264). These quotations contain an outright paradox: the meanings of music should be at the same time universal in the highest degree and characterised by the greatest distinctness. As it turns out this paradox does not follow merely from Schopenhauer's liking for brilliant, rethorical formulations. For it occurs in many contexts concerned with the expressive meaning of art, and especially music. Other occurrences of the dilemma are to be found in the writings of Felix Mendelssohn-Bartholdy and in the aesthetic theory of Susanne Langer formulated in chapter VIII, >On the Significance in Music of her book Philosophy in a New Key and it would be possible to quote many other sources. The persistently recurring nature of this paradox confirms that the issue will be central to any attempt at a complete theory of musical meaning. Furthermore, it may be essential for it to be resolved first if one aims to make sense of the relationship between musical and linguistic forms of meaning and, consequent upon this, to address the much debated question of whether music itself can be considered to be a language of the emotions. An attempt at a solution to the paradox in question constitutes the subject of this paper. For this purpose the framework and some notions of Langer's theory are used. The solution which I propose takes the form of distinguishing between two distinct notions of generality (which I will term 'generality' and 'abstractness'), as well as two distinct notions of particularity (which I will term 'specificity' and 'concreteness'), and involves assigning technically precise meanings to these with a view to constructing two relatively independent oppositions: on the one hand the concrete versus the abstract and, on the other, the specific versus the general. (Hints at such a solution are to be found both in Schopenhauer and in Langer). With the help of these notions it is, I believe, then possible to show that the arguments often quoted to the effect that musical meanings possess a certain generality in fact justify no more than their abstractness, while arguments usually thought to demonstrate that they possess a certain particularity in fact show only their specificity (but not concreteness). Consequently, musical meanings are shown to be abstract but specific, which does not entail any contradiction since these notions are independent and not opposed to each other. At the same time, musical meanings may then be contrasted with linguistic meanings, which themselves are abstract and general. If, however, each of the notions of abstractness and generality is understood as also permitting gradations, it will be the case that whereas linguistic meanings may be said to be more general (i.e. less specific) than musical ones, the latter are without any doubt more abstract than the former. (shrink)

This paper is not so much concerned with the question under which circumstances self-defense is justified, but rather with other normative features of self-defense as well as with the source of the self-defense justification. I will argue that the aggressor’s rights-forfeiture alone – and hence the liberty-right of the defender to defend himself – cannot explain the intuitively obvious fact that a prohibition on self-defense would wrong victims of attack. This can only be explained by conceiving of self-defense also as (...) a claim-right. However, I will also argue that a claim-right cannot ground the self-defense justification either. Rather, what grounds the self-defense justification and its particular strength and scope is the fact that self-defense is an act-specific agent-relative prerogative: a defender is allowed to give particularly grave weight to his interest in engaging in self-defense, which distinguishes self-defense from most other acts. This is not the same as saying that he has a right or a liberty to engage in self-defense. Thus, self-defense, understood as a normative concept, is a claim-right, a liberty-right, and an act-specific agent-relative prerogative. (shrink)

Verrassend misschien voor filosofen buiten Frankrijk, maar in Parijs is wetenschap altijd een object van filosofische reflectie geweest – niet in de vorm van de analytische wetenschapsfilosofie zoals die buiten Frankrijk wordt onderwezen, maar onder de noemer van historische epistemologie, of soms ook wel kortweg épistémologie genoemd. Dit themanummer wil een inleiding zijn op deze traditie in haar denkers.